The torrential rains last week caused 2.6 million gallons of untreated sewage to spill from the Edgewood treatment plant at Aberdeen Proving Ground in Harford County. Much of the sewage from the plant's primary settling tank flowed into King's Creek and the Bush River.
Crews applied lime to the affected areas, including the shore lines. The Army base has posted signs banning fishing, crabbing, shellfish harvesting and swimming. The warnings will be in place until at least Oct. 15, officials said.
Officials said the plant's equipment has been recently upgraded but could not handle 8 inches of rain in less than 36 hours.
APG has notified the Maryland Department of the Environment and the Harford County Health Department about the incident.